source: src/CodeGen/CodeGenerator.cc@ 954463b8

ADT aaron-thesis arm-eh ast-experimental cleanup-dtors ctor deferred_resn demangler enum forall-pointer-decay gc_noraii jacob/cs343-translation jenkins-sandbox memory new-ast new-ast-unique-expr new-env no_list persistent-indexer pthread-emulation qualifiedEnum resolv-new string with_gc
Last change on this file since 954463b8 was d939274, checked in by Rob Schluntz <rschlunt@…>, 10 years ago

documentation, reformatting, operator+ for iterators
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File size: 17.7 KB
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[51587aa]1//
2// Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
3//
4// The contents of this file are covered under the licence agreement in the
5// file "LICENCE" distributed with Cforall.
6//
[6c4ff37]7// CodeGenerator.cc --
[51587aa]8//
9// Author : Richard C. Bilson
10// Created On : Mon May 18 07:44:20 2015
[6c4ff37]11// Last Modified By : Rob Schluntz
[d939274]12// Last Modified On : Tue Jun 02 13:45:20 2015
13// Update Count : 119
[51587aa]14//
15
[51b73452]16#include <algorithm>
17#include <iostream>
18#include <cassert>
19#include <list>
20
21#include "SynTree/Type.h"
22#include "SynTree/Declaration.h"
23#include "SynTree/Statement.h"
24#include "SynTree/Expression.h"
25#include "SynTree/Initializer.h"
26
27#include "utility.h"
28#include "UnimplementedError.h"
29
[6c4ff37]30#include "CodeGenerator.h"
[51b73452]31#include "OperatorTable.h"
32#include "GenType.h"
33
34using namespace std;
35
36namespace CodeGen {
[6c4ff37]37 int CodeGenerator::tabsize = 4;
[51587aa]38
[2b6c1e0]39 // the kinds of statements that would ideally be separated by more whitespace
40 bool wantSpacing( Statement * stmt) {
41 return dynamic_cast< IfStmt * >( stmt ) || dynamic_cast< CompoundStmt * >( stmt ) ||
42 dynamic_cast< WhileStmt * >( stmt ) || dynamic_cast< ForStmt * > ( stmt ) || dynamic_cast< SwitchStmt *>( stmt );
43 }
44
[6c4ff37]45 CodeGenerator::CodeGenerator( std::ostream &os ) : cur_indent( 0 ), insideFunction( false ), output( os ) { }
[51587aa]46
[6c4ff37]47 CodeGenerator::CodeGenerator( std::ostream &os, std::string init, int indent, bool infunp )
48 : cur_indent( indent ), insideFunction( infunp ), output( os ) {
49 //output << std::string( init );
[51587aa]50 }
51
[6c4ff37]52 CodeGenerator::CodeGenerator( std::ostream &os, char *init, int indent, bool infunp )
53 : cur_indent( indent ), insideFunction( infunp ), output( os ) {
54 //output << std::string( init );
[51587aa]55 }
56
57 string mangleName( DeclarationWithType *decl ) {
58 if ( decl->get_mangleName() != "" ) {
59 return decl->get_mangleName();
60 } else {
61 return decl->get_name();
62 } // if
63 }
[51b73452]64
[51587aa]65 //*** Declarations
[6c4ff37]66 void CodeGenerator::visit( FunctionDecl *functionDecl ) {
[51587aa]67 handleStorageClass( functionDecl );
[f38c8d9]68 if ( functionDecl->get_isInline() ) {
[6c4ff37]69 output << "inline ";
[f38c8d9]70 } // if
[6c4ff37]71 output << genType( functionDecl->get_functionType(), mangleName( functionDecl ) );
[51587aa]72
73 // how to get this to the Functype?
74 std::list< Declaration * > olds = functionDecl->get_oldDecls();
75 if ( ! olds.empty() ) {
[6c4ff37]76 output << " /* function has old declaration */";
[51587aa]77 } // if
78
79 // acceptAll( functionDecl->get_oldDecls(), *this );
80 if ( functionDecl->get_statements() ) {
81 functionDecl->get_statements()->accept(*this );
82 } // if
83 }
84
[6c4ff37]85 void CodeGenerator::visit( ObjectDecl *objectDecl ) {
[51587aa]86 handleStorageClass( objectDecl );
[6c4ff37]87 output << genType( objectDecl->get_type(), mangleName( objectDecl ) );
[51587aa]88
89 if ( objectDecl->get_init() ) {
[6c4ff37]90 output << " = ";
[51587aa]91 objectDecl->get_init()->accept( *this );
92 } // if
93 if ( objectDecl->get_bitfieldWidth() ) {
[6c4ff37]94 output << ":";
[51587aa]95 objectDecl->get_bitfieldWidth()->accept( *this );
96 } // if
97 }
98
[6c4ff37]99 void CodeGenerator::handleAggregate( AggregateDecl *aggDecl ) {
[51587aa]100 if ( aggDecl->get_name() != "" )
[6c4ff37]101 output << aggDecl->get_name();
[51587aa]102
103 std::list< Declaration * > &memb = aggDecl->get_members();
104
105 if ( ! memb.empty() ) {
[6c4ff37]106 output << endl << string( cur_indent, ' ' ) << "{" << endl;
[51587aa]107
[6c4ff37]108 cur_indent += CodeGenerator::tabsize;
[51587aa]109 for ( std::list< Declaration* >::iterator i = memb.begin(); i != memb.end(); i++) {
[6c4ff37]110 output << string( cur_indent, ' ' );
[51587aa]111 (*i)->accept(*this );
[6c4ff37]112 output << ";" << endl;
[51587aa]113 }
114
[6c4ff37]115 cur_indent -= CodeGenerator::tabsize;
[51587aa]116
[6c4ff37]117 output << string( cur_indent, ' ' ) << "}";
[17cd4eb]118 } // if
[51587aa]119 }
[17cd4eb]120
[6c4ff37]121 void CodeGenerator::visit( StructDecl *structDecl ) {
122 output << "struct ";
[51587aa]123 handleAggregate( structDecl );
124 }
[17cd4eb]125
[6c4ff37]126 void CodeGenerator::visit( UnionDecl *aggregateDecl ) {
127 output << "union ";
[51587aa]128 handleAggregate( aggregateDecl );
129 }
[51b73452]130
[6c4ff37]131 void CodeGenerator::visit( EnumDecl *aggDecl ) {
132 output << "enum ";
[51587aa]133
134 if ( aggDecl->get_name() != "" )
[6c4ff37]135 output << aggDecl->get_name();
[51587aa]136
137 std::list< Declaration* > &memb = aggDecl->get_members();
138
139 if ( ! memb.empty() ) {
[6c4ff37]140 output << endl << "{" << endl;
[51587aa]141
[6c4ff37]142 cur_indent += CodeGenerator::tabsize;
[51587aa]143 for ( std::list< Declaration* >::iterator i = memb.begin(); i != memb.end(); i++) {
144 ObjectDecl *obj = dynamic_cast< ObjectDecl* >( *i );
145 assert( obj );
[6c4ff37]146 output << string( cur_indent, ' ' ) << mangleName( obj );
[51587aa]147 if ( obj->get_init() ) {
[6c4ff37]148 output << " = ";
[51587aa]149 obj->get_init()->accept(*this );
150 } // if
[6c4ff37]151 output << "," << endl;
[51587aa]152 } // for
153
[6c4ff37]154 cur_indent -= CodeGenerator::tabsize;
[51587aa]155
[6c4ff37]156 output << "}" << endl;
[51587aa]157 } // if
158 }
[51b73452]159
[6c4ff37]160 void CodeGenerator::visit( ContextDecl *aggregateDecl ) {}
[51587aa]161
[6c4ff37]162 void CodeGenerator::visit( TypedefDecl *typeDecl ) {
163 output << "typedef ";
164 output << genType( typeDecl->get_base(), typeDecl->get_name() );
[51587aa]165 }
[51b73452]166
[6c4ff37]167 void CodeGenerator::visit( TypeDecl *typeDecl ) {
[51587aa]168 // really, we should mutate this into something that isn't a TypeDecl but that requires large-scale changes,
169 // still to be done
[6c4ff37]170 output << "extern unsigned long " << typeDecl->get_name();
[51587aa]171 if ( typeDecl->get_base() ) {
[6c4ff37]172 output << " = sizeof( " << genType( typeDecl->get_base(), "" ) << " )";
[51587aa]173 } // if
174 }
175
[6c4ff37]176 void CodeGenerator::visit( SingleInit *init ) {
[51587aa]177 init->get_value()->accept( *this );
178 }
179
[6c4ff37]180 void CodeGenerator::visit( ListInit *init ) {
181 output << "{ ";
[51587aa]182 genCommaList( init->begin_initializers(), init->end_initializers() );
[6c4ff37]183 output << " }";
[51587aa]184 }
185
[6c4ff37]186 void CodeGenerator::visit( Constant *constant ) {
187 output << constant->get_value() ;
[51587aa]188 }
189
190 //*** Expressions
[6c4ff37]191 void CodeGenerator::visit( ApplicationExpr *applicationExpr ) {
[51587aa]192 if ( VariableExpr *varExpr = dynamic_cast< VariableExpr* >( applicationExpr->get_function() ) ) {
193 OperatorInfo opInfo;
194 if ( varExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic && operatorLookup( varExpr->get_var()->get_name(), opInfo ) ) {
195 std::list< Expression* >::iterator arg = applicationExpr->get_args().begin();
196 switch ( opInfo.type ) {
197 case OT_PREFIXASSIGN:
198 case OT_POSTFIXASSIGN:
199 case OT_INFIXASSIGN:
200 {
201 assert( arg != applicationExpr->get_args().end() );
202 if ( AddressExpr *addrExpr = dynamic_cast< AddressExpr * >( *arg ) ) {
203
204 *arg = addrExpr->get_arg();
205 } else {
206 UntypedExpr *newExpr = new UntypedExpr( new NameExpr( "*?" ) );
207 newExpr->get_args().push_back( *arg );
208 *arg = newExpr;
209 } // if
210 break;
211 }
212
213 default:
214 // do nothing
215 ;
216 }
217
218 switch ( opInfo.type ) {
219 case OT_INDEX:
220 assert( applicationExpr->get_args().size() == 2 );
221 (*arg++)->accept( *this );
[6c4ff37]222 output << "[";
[51587aa]223 (*arg)->accept( *this );
[6c4ff37]224 output << "]";
[51587aa]225 break;
226
227 case OT_CALL:
228 // there are no intrinsic definitions of the function call operator
229 assert( false );
230 break;
231
232 case OT_PREFIX:
233 case OT_PREFIXASSIGN:
234 assert( applicationExpr->get_args().size() == 1 );
[6c4ff37]235 output << "(";
236 output << opInfo.symbol;
[51587aa]237 (*arg)->accept( *this );
[6c4ff37]238 output << ")";
[51587aa]239 break;
240
241 case OT_POSTFIX:
242 case OT_POSTFIXASSIGN:
243 assert( applicationExpr->get_args().size() == 1 );
244 (*arg)->accept( *this );
[6c4ff37]245 output << opInfo.symbol;
[51587aa]246 break;
247
248 case OT_INFIX:
249 case OT_INFIXASSIGN:
250 assert( applicationExpr->get_args().size() == 2 );
[6c4ff37]251 output << "(";
[51587aa]252 (*arg++)->accept( *this );
[6c4ff37]253 output << opInfo.symbol;
[51587aa]254 (*arg)->accept( *this );
[6c4ff37]255 output << ")";
[51587aa]256 break;
257
258 case OT_CONSTANT:
259 // there are no intrinsic definitions of 0 or 1 as functions
260 assert( false );
261 }
[17cd4eb]262 } else {
[51587aa]263 varExpr->accept( *this );
[6c4ff37]264 output << "(";
[51587aa]265 genCommaList( applicationExpr->get_args().begin(), applicationExpr->get_args().end() );
[6c4ff37]266 output << ")";
[17cd4eb]267 } // if
[51587aa]268 } else {
269 applicationExpr->get_function()->accept( *this );
[6c4ff37]270 output << "(";
[51587aa]271 genCommaList( applicationExpr->get_args().begin(), applicationExpr->get_args().end() );
[6c4ff37]272 output << ")";
[51587aa]273 } // if
274 }
[51b73452]275
[6c4ff37]276 void CodeGenerator::visit( UntypedExpr *untypedExpr ) {
[51587aa]277 if ( NameExpr *nameExpr = dynamic_cast< NameExpr* >( untypedExpr->get_function() ) ) {
278 OperatorInfo opInfo;
279 if ( operatorLookup( nameExpr->get_name(), opInfo ) ) {
280 std::list< Expression* >::iterator arg = untypedExpr->get_args().begin();
281 switch ( opInfo.type ) {
282 case OT_INDEX:
283 assert( untypedExpr->get_args().size() == 2 );
284 (*arg++)->accept( *this );
[6c4ff37]285 output << "[";
[51587aa]286 (*arg)->accept( *this );
[6c4ff37]287 output << "]";
[51587aa]288 break;
289
290 case OT_CALL:
291 assert( false );
292 break;
293
294 case OT_PREFIX:
295 case OT_PREFIXASSIGN:
296 assert( untypedExpr->get_args().size() == 1 );
[6c4ff37]297 output << "(";
298 output << opInfo.symbol;
[51587aa]299 (*arg)->accept( *this );
[6c4ff37]300 output << ")";
[51587aa]301 break;
302
303 case OT_POSTFIX:
304 case OT_POSTFIXASSIGN:
305 assert( untypedExpr->get_args().size() == 1 );
306 (*arg)->accept( *this );
[6c4ff37]307 output << opInfo.symbol;
[51587aa]308 break;
[51b73452]309
[51587aa]310 case OT_INFIX:
311 case OT_INFIXASSIGN:
312 assert( untypedExpr->get_args().size() == 2 );
[6c4ff37]313 output << "(";
[51587aa]314 (*arg++)->accept( *this );
[6c4ff37]315 output << opInfo.symbol;
[51587aa]316 (*arg)->accept( *this );
[6c4ff37]317 output << ")";
[51587aa]318 break;
319
320 case OT_CONSTANT:
321 // there are no intrinsic definitions of 0 or 1 as functions
322 assert( false );
323 }
324 } else {
325 nameExpr->accept( *this );
[6c4ff37]326 output << "(";
[51587aa]327 genCommaList( untypedExpr->get_args().begin(), untypedExpr->get_args().end() );
[6c4ff37]328 output << ")";
[51587aa]329 } // if
330 } else {
331 untypedExpr->get_function()->accept( *this );
[6c4ff37]332 output << "(";
[51587aa]333 genCommaList( untypedExpr->get_args().begin(), untypedExpr->get_args().end() );
[6c4ff37]334 output << ")";
[51587aa]335 } // if
336 }
[51b73452]337
[6c4ff37]338 void CodeGenerator::visit( NameExpr *nameExpr ) {
[51587aa]339 OperatorInfo opInfo;
340 if ( operatorLookup( nameExpr->get_name(), opInfo ) ) {
341 assert( opInfo.type == OT_CONSTANT );
[6c4ff37]342 output << opInfo.symbol;
[51587aa]343 } else {
[6c4ff37]344 output << nameExpr->get_name();
[51587aa]345 } // if
346 }
[51b73452]347
[6c4ff37]348 void CodeGenerator::visit( AddressExpr *addressExpr ) {
349 output << "(&";
[51587aa]350 // this hack makes sure that we don't convert "constant_zero" to "0" if we're taking its address
351 if ( VariableExpr *variableExpr = dynamic_cast< VariableExpr* >( addressExpr->get_arg() ) ) {
[6c4ff37]352 output << mangleName( variableExpr->get_var() );
[51587aa]353 } else {
354 addressExpr->get_arg()->accept( *this );
355 } // if
[6c4ff37]356 output << ")";
[51587aa]357 }
358
[6c4ff37]359 void CodeGenerator::visit( CastExpr *castExpr ) {
360 output << "((";
[51587aa]361 if ( castExpr->get_results().empty() ) {
[6c4ff37]362 output << "void" ;
[51587aa]363 } else {
[6c4ff37]364 output << genType( castExpr->get_results().front(), "" );
[51587aa]365 } // if
[6c4ff37]366 output << ")";
[51587aa]367 castExpr->get_arg()->accept( *this );
[6c4ff37]368 output << ")";
[51587aa]369 }
[51b73452]370
[6c4ff37]371 void CodeGenerator::visit( UntypedMemberExpr *memberExpr ) {
[51587aa]372 assert( false );
373 }
[51b73452]374
[6c4ff37]375 void CodeGenerator::visit( MemberExpr *memberExpr ) {
[51587aa]376 memberExpr->get_aggregate()->accept( *this );
[6c4ff37]377 output << "." << mangleName( memberExpr->get_member() );
[51587aa]378 }
[51b73452]379
[6c4ff37]380 void CodeGenerator::visit( VariableExpr *variableExpr ) {
[51587aa]381 OperatorInfo opInfo;
382 if ( variableExpr->get_var()->get_linkage() == LinkageSpec::Intrinsic && operatorLookup( variableExpr->get_var()->get_name(), opInfo ) && opInfo.type == OT_CONSTANT ) {
[6c4ff37]383 output << opInfo.symbol;
[51587aa]384 } else {
[6c4ff37]385 output << mangleName( variableExpr->get_var() );
[51587aa]386 } // if
387 }
[51b73452]388
[6c4ff37]389 void CodeGenerator::visit( ConstantExpr *constantExpr ) {
[51587aa]390 assert( constantExpr->get_constant() );
391 constantExpr->get_constant()->accept( *this );
392 }
[51b73452]393
[6c4ff37]394 void CodeGenerator::visit( SizeofExpr *sizeofExpr ) {
395 output << "sizeof(";
[51587aa]396 if ( sizeofExpr->get_isType() ) {
[6c4ff37]397 output << genType( sizeofExpr->get_type(), "" );
[51587aa]398 } else {
399 sizeofExpr->get_expr()->accept( *this );
400 } // if
[6c4ff37]401 output << ")";
[51587aa]402 }
[51b73452]403
[6c4ff37]404 void CodeGenerator::visit( LogicalExpr *logicalExpr ) {
405 output << "(";
[51587aa]406 logicalExpr->get_arg1()->accept( *this );
407 if ( logicalExpr->get_isAnd() ) {
[6c4ff37]408 output << " && ";
[51587aa]409 } else {
[6c4ff37]410 output << " || ";
[51587aa]411 } // if
412 logicalExpr->get_arg2()->accept( *this );
[6c4ff37]413 output << ")";
[51587aa]414 }
[51b73452]415
[6c4ff37]416 void CodeGenerator::visit( ConditionalExpr *conditionalExpr ) {
417 output << "(";
[51587aa]418 conditionalExpr->get_arg1()->accept( *this );
[6c4ff37]419 output << " ? ";
[51587aa]420 conditionalExpr->get_arg2()->accept( *this );
[6c4ff37]421 output << " : ";
[51587aa]422 conditionalExpr->get_arg3()->accept( *this );
[6c4ff37]423 output << ")";
[51587aa]424 }
[51b73452]425
[6c4ff37]426 void CodeGenerator::visit( CommaExpr *commaExpr ) {
427 output << "(";
[51587aa]428 commaExpr->get_arg1()->accept( *this );
[6c4ff37]429 output << " , ";
[51587aa]430 commaExpr->get_arg2()->accept( *this );
[6c4ff37]431 output << ")";
[51587aa]432 }
[51b73452]433
[6c4ff37]434 void CodeGenerator::visit( TupleExpr *tupleExpr ) {}
[51b73452]435
[6c4ff37]436 void CodeGenerator::visit( TypeExpr *typeExpr ) {}
[2b6c1e0]437
[51587aa]438 //*** Statements
[6c4ff37]439 void CodeGenerator::visit( CompoundStmt *compoundStmt ) {
[51587aa]440 std::list<Statement*> ks = compoundStmt->get_kids();
[2b6c1e0]441 output << "{" << endl;
[51587aa]442
[2b6c1e0]443 cur_indent += CodeGenerator::tabsize;
[51587aa]444
445 for ( std::list<Statement *>::iterator i = ks.begin(); i != ks.end(); i++) {
[2b6c1e0]446 output << string( cur_indent, ' ' ) << printLabels( (*i)->get_labels() );
[51587aa]447 (*i)->accept(*this );
[2b6c1e0]448
[6c4ff37]449 output << endl;
[2b6c1e0]450 if ( wantSpacing( *i ) ) {
451 output << endl;
452 }
[51587aa]453 }
[6c4ff37]454 cur_indent -= CodeGenerator::tabsize;
[51587aa]455
[2b6c1e0]456 output << string( cur_indent, ' ' ) << "}";
[51587aa]457 }
458
[6c4ff37]459 void CodeGenerator::visit( ExprStmt *exprStmt ) {
460 // I don't see why this check is necessary.
461 // If this starts to cause problems then put it back in,
462 // with an explanation
463 assert( exprStmt );
464
465 // if ( exprStmt != 0 ) {
466 exprStmt->get_expr()->accept( *this );
467 output << ";" ;
468 // } // if
[51587aa]469 }
470
[6c4ff37]471 void CodeGenerator::visit( IfStmt *ifStmt ) {
472 output << "if (";
[51587aa]473 ifStmt->get_condition()->accept(*this );
[2b6c1e0]474 output << ") ";
[51587aa]475
476 ifStmt->get_thenPart()->accept(*this );
477
478 if ( ifStmt->get_elsePart() != 0) {
[2b6c1e0]479 output << " else ";
[51587aa]480 ifStmt->get_elsePart()->accept(*this );
481 } // if
482 }
483
[6c4ff37]484 void CodeGenerator::visit( SwitchStmt *switchStmt ) {
485 //output << /* "\r" << */ string( cur_indent, ' ' ) << CodeGenerator::printLabels( switchStmt->get_labels() )
486 output << "switch (" ;
[51587aa]487 switchStmt->get_condition()->accept(*this );
[2b6c1e0]488 output << ") ";
[6c4ff37]489
[2b6c1e0]490 output << "{" << std::endl;
[6c4ff37]491 cur_indent += CodeGenerator::tabsize;
[51587aa]492
[6c4ff37]493 acceptAll( switchStmt->get_branches(), *this );
[51587aa]494
[6c4ff37]495 cur_indent -= CodeGenerator::tabsize;
[51587aa]496
[2b6c1e0]497 output << string( cur_indent, ' ' ) << "}";
[51587aa]498 }
499
[6c4ff37]500 void CodeGenerator::visit( CaseStmt *caseStmt ) {
501 output << string( cur_indent, ' ' );
[51587aa]502 if ( caseStmt->isDefault())
[2b6c1e0]503 output << "default";
[51587aa]504 else {
[2b6c1e0]505 output << "case ";
[51587aa]506 caseStmt->get_condition()->accept(*this );
[17cd4eb]507 } // if
[6c4ff37]508 output << ":\n";
509
[51587aa]510 std::list<Statement *> sts = caseStmt->get_statements();
511
[6c4ff37]512 cur_indent += CodeGenerator::tabsize;
[51587aa]513 for ( std::list<Statement *>::iterator i = sts.begin(); i != sts.end(); i++) {
[6c4ff37]514 output << /* "\r" << */ string( cur_indent, ' ' ) << printLabels( (*i)->get_labels() ) ;
[51587aa]515 (*i)->accept(*this );
[6c4ff37]516 output << endl;
[51587aa]517 }
[6c4ff37]518 cur_indent -= CodeGenerator::tabsize;
[51587aa]519 }
520
[6c4ff37]521 void CodeGenerator::visit( BranchStmt *branchStmt ) {
522 output << "\r" << string( cur_indent, ' ' );
523 output << CodeGenerator::printLabels( branchStmt->get_labels());
524
[51587aa]525 switch ( branchStmt->get_type()) {
526 case BranchStmt::Goto:
527 if ( ! branchStmt->get_target().empty() )
[6c4ff37]528 output << "goto " << branchStmt->get_target();
[51587aa]529 else {
530 if ( branchStmt->get_computedTarget() != 0 ) {
[6c4ff37]531 output << "goto *";
[51587aa]532 branchStmt->get_computedTarget()->accept( *this );
533 } // if
534 } // if
535 break;
536 case BranchStmt::Break:
[6c4ff37]537 output << "break";
[51587aa]538 break;
539 case BranchStmt::Continue:
[6c4ff37]540 output << "continue";
[51587aa]541 break;
542 }
[2b6c1e0]543 output << ";";
[51587aa]544 }
545
546
[6c4ff37]547 void CodeGenerator::visit( ReturnStmt *returnStmt ) {
548 output << "return ";
[51587aa]549
550 // xxx -- check for null expression;
551 if ( returnStmt->get_expr() ) {
552 returnStmt->get_expr()->accept( *this );
553 } // if
[6c4ff37]554 output << ";";
[51587aa]555 }
556
[6c4ff37]557 void CodeGenerator::visit( WhileStmt *whileStmt ) {
[51587aa]558 if ( whileStmt->get_isDoWhile() )
[6c4ff37]559 output << "do" ;
[51587aa]560 else {
[6c4ff37]561 output << "while (" ;
[51587aa]562 whileStmt->get_condition()->accept(*this );
[6c4ff37]563 output << ")";
[51587aa]564 } // if
[2b6c1e0]565 output << " ";
[51587aa]566
[2b6c1e0]567 output << CodeGenerator::printLabels( whileStmt->get_body()->get_labels() );
[51587aa]568 whileStmt->get_body()->accept( *this );
569
[6c4ff37]570 output << /* "\r" << */ string( cur_indent, ' ' );
[51587aa]571
572 if ( whileStmt->get_isDoWhile() ) {
[6c4ff37]573 output << " while (" ;
[51587aa]574 whileStmt->get_condition()->accept(*this );
[6c4ff37]575 output << ");";
[51587aa]576 } // if
577 }
578
[6c4ff37]579 void CodeGenerator::visit( ForStmt *forStmt ) {
580 output << "for (";
[51587aa]581
582 if ( forStmt->get_initialization() != 0 )
583 forStmt->get_initialization()->accept( *this );
584 else
[6c4ff37]585 output << ";";
586
[51587aa]587 if ( forStmt->get_condition() != 0 )
588 forStmt->get_condition()->accept( *this );
[6c4ff37]589 output << ";";
[51587aa]590
591 if ( forStmt->get_increment() != 0 )
592 forStmt->get_increment()->accept( *this );
[2b6c1e0]593 output << ") ";
[51587aa]594
595 if ( forStmt->get_body() != 0 ) {
[2b6c1e0]596 output << CodeGenerator::printLabels( forStmt->get_body()->get_labels() );
[51587aa]597 forStmt->get_body()->accept( *this );
598 } // if
599 }
600
[6c4ff37]601 void CodeGenerator::visit( NullStmt *nullStmt ) {
602 //output << /* "\r" << */ string( cur_indent, ' ' ) << CodeGenerator::printLabels( nullStmt->get_labels() );
603 output << "/* null statement */ ;";
[51587aa]604 }
605
[6c4ff37]606 void CodeGenerator::visit( DeclStmt *declStmt ) {
[51587aa]607 declStmt->get_decl()->accept( *this );
608
609 if ( doSemicolon( declStmt->get_decl() ) ) {
[6c4ff37]610 output << ";";
[51587aa]611 } // if
612 }
613
[6c4ff37]614 std::string CodeGenerator::printLabels( std::list< Label > &l ) {
[51587aa]615 std::string str( "" );
[6c4ff37]616 l.unique(); // assumes a sorted list. Why not use set?
[51587aa]617
618 for ( std::list< Label >::iterator i = l.begin(); i != l.end(); i++ )
619 str += *i + ": ";
620
621 return str;
622 }
623
[6c4ff37]624 void CodeGenerator::handleStorageClass( Declaration *decl ) {
[51587aa]625 switch ( decl->get_storageClass() ) {
626 case Declaration::NoStorageClass:
627 break;
628 case Declaration::Extern:
[6c4ff37]629 output << "extern ";
[51587aa]630 break;
631 case Declaration::Static:
[6c4ff37]632 output << "static ";
[51587aa]633 break;
634 case Declaration::Auto:
635 // silently drop storage class
636 break;
637 case Declaration::Register:
[6c4ff37]638 output << "register ";
[51587aa]639 break;
[f38c8d9]640 case Declaration::Inline:
641 // handled as special via isInline flag (FIX)
642 break;
643 case Declaration::Fortran:
644 // not handled
645 break;
[843054c2]646 } // switch
[51587aa]647 }
[51b73452]648} // namespace CodeGen
[51587aa]649
650// Local Variables: //
651// tab-width: 4 //
652// mode: c++ //
653// compile-command: "make install" //
654// End: //
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